A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

Located 2.5 million light-years away, the majestic Andromeda galaxy appears to the naked eye as a faint, spindle-shaped ...

NASA's Hubble Space Telescope reveals surprising details about Andromeda's satellite galaxies, offering fresh insights into ...

An international team of astronomers reports the discovery of a new dwarf galaxy, which they have named Pegasus VII. The ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Astronomers spent a decade compiling this special image with the Hubble Space Telescope and then stitched together 600 photos ...

NASA’s Spitzer Space Telescope has captured this stunning image of Andromeda Galaxy which is also known as M31. This image, captured by NASA's retired Spitzer Space Telescope, shows only dust which ...

Multiple planets are going to appear together in the sky. Some astronomy fans are calling it a “planet parade.” There won’t ...

A collaboration of more than 30 international institutions, including the University of Surrey, has observed vast differences in the dynamic ecosystem of smaller satellite galaxies orbiting our ...

Located 2.5 million light-years away, the majestic Andromeda galaxy appears to the naked eye as a faint, spindle-shaped ...

The Hubble Space Telescope revealed that the Andromeda Galaxy’s ecosystem differs from our Milky Way’s. This shows how these ...